Stats exam - Study guides, Class notes & Summaries

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stats exam 1 questions & answers 2023/2024 research - ANSWER-Research - systematic approach to finding answers to a question scientific method - ANSWER-reduces a question to its observable components and tests possible answers to the question steps in research process - ANSWER-Identify and define a research problem Examine theories and past research to devise hypothesis Design a study that will produce data relevant to the hypothesis Carry out research Analyze the data produc...

Stats Exam 1 Review Questions With Complete Solutions

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STATS EXAM 3 QUESTIONS AND ANSWERS

Suppose that someone sampled 100 Palm trees of the same species, all planted at the same time. They recorded the height for each tree. What shape would you expect the histogram of this data to be? A. Symmetric B. Right Skewed C. Left Skewed D. Uniform - Answer- A. (Symmetric) A marketing researcher is testing out new names for a hair product. She asks 40 women to pick the name of the product that they would be most likely to buy out of a list of 4 names. Could she use a dotplot to descr...

qauntitative data : numerical data consists of data values that are numerical, representing quantities that can be counted or measured. categorical data : qaulitative data onsists of data that are groups, such as names or labels, and are not necessarily numerical. side note : It is possible for numbers to be used as categorical data. For example, the numbers on the uniforms of basketball players are categorical, because they are used to identify players, and they do not measure a ...

BCTC STATS EXAM 1 2024 WITH 100% CORRECT ANSWERS What is a voluntary response sample? - correct answer A sample in which the subjects themselves decide whether to be included in the study. Use common sense to determine whether the given event is either impossible, possible but very unlikely, or possible and likely. (New England beat Denver in a football game by a score of 140 to 100) - correct answer possible, but very unlikely In a study of a weight loss program, 45 subjects lost a...

Interpret the correlation "r" Answer: There is a ___________ __________ linear relationship between ___________ (x) and ____________(y). Interpret the coefficient of determination "r^2" Answer: ___% of the variation in _________ (y) can be explained by the linear relationship with _________ (x). Interpret the slope "b" Answer: For every 1 unit increase in ___________ (x), our model predicts an average _________ of __(b) in _________ (y). Interpret the y int...